Hello and a great question! You might be looking for the Edit and Resend feature, which allows you to take an old/past campaign and move a direct copy back to the drafts area. You can use that as a base to recreate a new campaign. Or, if you want to use the HTML and images on your desktop to create a new campaign. You can find that past campaign in the Reports page, click on the "View" link to preview what the campaign looked like > use the web version link > then use your browser ( right-click "save as" ) to save a complete version of the HTML and images on your desktop. I hope that has helped!

I eventually dug out Diana's old answer from last year, which goes a little further:Go to Edit and resend past campaign > update (on campaign snapshot) > edit my html - This then provides the source HTML I needed

This is what I needed (and got, and our newsletter happily went out yesterday afternoon)